Dust-conveyer



W. MILLER.

I DUST GONVEYBR.

(No' Model.)

No. 416,936. Patented Dem 10, 1889.

WITNESSES: 7 7k ATTORNEYS.

N: PEEHS. PhOIo-Lhhogmpher. Wilmington. D, Q

UNITED STATES PATENT OFFICE.

'WILLIAM S. MILLER, OF MEYERSDALE, PENNSYLVANIA.

DUST--CONVEYER.

I W i SPECIFICATION forming part of Letters Patent No. 416,936, datedDecember 10, 1889.

Application filed June 22, 1889. Serial No. 315 ,183. (N0 model.)

To aZZ whom, it may concern:

Be it known that I, WILLIAM S. MILLER, of Meyersdale, in the county ofSomerset and State of Pennsylvania, have invented a new and ImprovedDust-Conveyer, of which the following is a full, clear, and exactdescription.

This invention relates to dust-conveyers of the class employed inconnection with thrashers, the main objects of the invention being toprovide for the clearing of the fan-blades and to provide for the equaldistribution of the suction produced by the fan; and to the end namedthe invention consists, essentially, of a fan, clearers arranged inconnection therewith, and a casing arranged to form a conduit or wayfrom a point beneath the fanchamber to the induction-ports leading tosaid chamber, all as will be hereinafter fully explained, andspecifically pointed out in the claims.

Reference is to be had to the accompanying drawings, formingapart ofthis-specification,

in which similar figures and letters of reference lndlcate correspondingparts in all the views.

Figure l is a cross-sectional elevation of a dust-conveyer embodyingmy'invention. Fig. 2 is a central longitudinal vertical section of thesame, and Fig. 3 is a perspective view of the fan-clearer.

In the drawings above referred to, 10 represents the trunk of athrashing-machine, that is apertured in the ordinary manner, and abovethe aperture so formed in the trunk 10 I is placed a case 11, in whichthere is mounted a fan 13, the fan being supported by a shaft 14. Thecase 11 is divided into compartments A B B, the compartment A being thefan-chamber and the compartments B and B being bottomless in orderthata'free' communication may be established with the interior of thethrashing-machine trunk, communication between the chamber'A and thechambers B and B being established by ports a, through which the shaft14 passes.

With the ordinary form of fan wire-net screens are employed to preventthe passage of small bits of straw, &c.; but such screens soon becomeclogged and the machine has to ly-attached plate.

be stopped to clear the screens. One of the main objects of myinventionis to provide through which there are passed set or bindingscrews 17, the shanks being secured to the side walls of the chamber A,as clearly shown in Fig. 1, the arrangement being such that the arms maybe adjusted toward or from the shaft in order to effect a properclearance of the blades.

To bring about a proper operation of the fan it is necessary that thebottom of the fanchamber should be closed, which thus leaves a sectionof the thrasher-trunk practically unaffected by the fan-current, and toreach this section I provide a 'casing 20, which is formed with anaperture 0 just beneath the chamber A, the casing leading to one of theinduction-ports a, as represented, and in this way I secure a suctionthroughout the full width of the thrasher-trunk.

With fans of this description it is desirable that provision be made fordischarging the blast in either direction, and to this end I provide thefan-chamber A with two eduction spouts or nozzles C and C, to either oneof which a flexible discharge-tube, as 20, may be connected, the otherspout or nozzle being closed either by a valve or by a permanent- Inthis way I provide for the application of the fan to thrashing-ma chineswherein the driving-pulleys are located upon either the right or left,as will be readily understood.

Having thus described n1yinvention,l claim as new and desire to secureby Letters Patent- 1. In a dust-conveyer for thrashing-machines, thecombination, with the fan and fan chambers or casing, of clearing-arms15, substantially as described.

gage the fan-chamber walls, substantially as described.

4. In a dust-conveyer for thrashing-machines, the'combin'ation, with thefan and fan chambers 0r casing, of a casing 20, formed with an aperture0, and arranged to communicate with one of the fan-chamberinduction-ports, substantially as described.

\VILLIAM S. MILLER. W'itnesses:

JOHN H. FRIEDLINE, DANIEL S. COBER.

